A year in Barkley Canyon: A time-series observatory study of mid-slope benthos and habitat dynamics using the NEPTUNE Canada network

Juniper, S. Kim; Matabos, Marjolaine; Mihaly, S. F.; Ajayamohan, R. S.; Gervais, F.; Bui, Alice O.V.

doi:10.1016/j.dsr2.2013.03.038

Cited by 54 publications

(65 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tidal rhythms observed in the temperature time series for NEP and MAR were concordant with observed tidal signals for the respective regions. For instance, in the NEP, measured tides in the Barkley Canyon, another instrumented node from ONC closer to shore, were mixed semi-diurnal/diurnal at 870 m depth (Juniper et al, 2013). In the same canyon, periods of enhanced bottom currents associated with diurnal shelf waves, internal semi-diurnal tides and wind-generated near-inertial motions were shown to modulate methane seepage (Thomsen et al, 2012).…”

Section: Long-term Environmental Variations and Rhythmsmentioning

confidence: 99%

“…0 to 25 µmol L −1 ; Tunni-cliffe et al, 1997). No significant periods (based on 12 or 24 h recording frequency) were found at the sites for the duration of the deployment, although some indications of 4.5-and 7.5-day periodicities could be observed at the MAR and 3.8-day cycles for Fe concentrations were detected in the same sampling area for -2013(Laës-Huon et al, 2017. For the NEP, 4-day oscillations in currents near seamounts along the crest of the Juan de Fuca Ridge were observed (Cannon and Thomson, 1996), but these were not visible in the Fe time series at NEP, although 4.5-day periodicities were visible in buccinids and polynoids .…”

Section: Long-term Environmental Variations and Rhythmsmentioning

confidence: 99%

“…The use of deep-sea observatories, which have been deployed recently in various seas and oceans (see Puillat et al, 2012 for an overview), brings new insights into the dynamics of these remote habitats. First ecological analyses based on deepsea observatories have been published (Juniper et al, 2013; Published by Copernicus Publications on behalf of the European Geosciences Union. 2956 D. Cuvelier et al: Biological and environmental rhythms Matabos et al, 2014Matabos et al, , 2015Cuvelier et al, 2014;Lelièvre et al, 2017), and many more works are in progress.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biological and environmental rhythms in (dark) deep-sea hydrothermal ecosystems

Cuvelier

Legendre²,

Laës-Huon

et al. 2017

Biogeosciences

View full text Add to dashboard Cite

Abstract. During 2011, two deep-sea observatories focusing on hydrothermal vent ecology were up and running in the Atlantic (Eiffel Tower, Lucky Strike vent field) and the Northeast Pacific Ocean (NEP) (Grotto, Main Endeavour Field). Both ecological modules recorded imagery and environmental variables jointly for a time span of 23 days (7-30 October 2011) and environmental variables for up to 9 months (October 2011-June 2012). Community dynamics were assessed based on imagery analysis and rhythms in temporal variation for both fauna and environment were revealed. Tidal rhythms were found to be at play in the two settings and were most visible in temperature and tubeworm appearances (at NEP). A ∼ 6 h lag in tidal rhythm occurrence was observed between Pacific and Atlantic hydrothermal vents, which corresponds to the geographical distance and time delay between the two sites.

show abstract

Section: Long-term Environmental Variations and Rhythmsmentioning

confidence: 99%

Section: Long-term Environmental Variations and Rhythmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biological and environmental rhythms in (dark) deep-sea hydrothermal ecosystems

Cuvelier

Legendre²,

Laës-Huon

et al. 2017

Biogeosciences

View full text Add to dashboard Cite

show abstract

“…A new generation of tethered mobile Internet Operated Vehicles (IOV), such as benthic crawlers, extends the potential observational footprint from a few square meters around fixed seafloor platforms [33, 34], to hundreds of square meters [35] in areas surrounding seafloor observatory nodes. This substantially extends our ability to document spatial habitat heterogeneity, and provides a larger sample size for detecting temporal variability.…”

Section: Introductionmentioning

confidence: 99%

Seasonal monitoring of deep-sea megabenthos in Barkley Canyon cold seep by internet operated vehicle (IOV)

et al. 2017

Self Cite

View full text Add to dashboard Cite

Knowledge of the processes shaping deep-sea benthic communities at seasonal scales in cold-seep environments is incomplete. Cold seeps within highly dynamic regions, such as submarine canyons, where variable current regimes may occur, are particularly understudied. Novel Internet Operated Vehicles (IOVs), such as tracked crawlers, provide new techniques for investigating these ecosystems over prolonged periods. In this study a benthic crawler connected to the NEPTUNE cabled infrastructure operated by Ocean Networks Canada was used to monitor community changes across 60 m2 of a cold-seep area of the Barkley Canyon, North East Pacific, at ~890 m depth within an Oxygen Minimum Zone (OMZ). Short video-transects were run at 4-h intervals during the first week of successive calendar months, over a 14 month period (February 14th 2013 to April 14th 2014). Within each recorded transect video megafauna abundances were computed and changes in environmental conditions concurrently measured. The responses of fauna to environmental conditions as a proxy of seasonality were assessed through analysis of abundances in a total of 438 video-transects (over 92 h of total footage). 7698 fauna individuals from 6 phyla (Cnidaria, Ctenophora, Arthropoda, Echinodermata, Mollusca, and Chordata) were logged and patterns in abundances of the 7 most abundant taxa (i.e. rockfish Sebastidae, sablefish Anoplopoma fimbria, hagfish Eptatretus stoutii, buccinids (Buccinoidea), undefined small crabs, ctenophores Bolinopsis infundibulum, and Scyphomedusa Poralia rufescens) were identified. Patterns in the reproductive behaviour of the grooved tanner crab (Chionnecetes tanneri) were also indicated. Temporal variations in biodiversity and abundance in megabenthic fauna was significantly influenced by variabilities in flow velocity flow direction (up or down canyon), dissolved oxygen concentration and month of study. Also reported here for the first time are transient mass aggregations of grooved tanner crabs through these depths of the canyon system, in early spring and likely linked to the crab’s reproductive cycle.

show abstract

“…Deriving universal patterns of canyon processes and characteristics will require such integrated research efforts to be repeated in several canyons, for several tectonic and environmental settings. To achieve comparable results, the submarine canyon research community will have to work towards comparable and compatible methodologies, including the set-up of (or continuation of) long-term monitoring programmes to assess the temporal aspects of canyon processes (Juniper et al, 2013;Martins et al, 2010). Understanding the scale (both spatial and temporal) at which canyon processes shape the canyon environment is key to understanding the biological and ecological patterns.…”

Section: Discussionmentioning

confidence: 99%